CN203726184U - Biaxial member special turning fixture - Google Patents
Biaxial member special turning fixture Download PDFInfo
- Publication number
- CN203726184U CN203726184U CN201420088463.3U CN201420088463U CN203726184U CN 203726184 U CN203726184 U CN 203726184U CN 201420088463 U CN201420088463 U CN 201420088463U CN 203726184 U CN203726184 U CN 203726184U
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- CN
- China
- Prior art keywords
- locating
- bent plate
- positioning
- special fixture
- shaft part
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- Expired - Fee Related
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Abstract
The utility model provides a biaxial member special turning fixture comprising a vertical plate and a bent plate which are connected through a positioning shaft assembly. One end of the bent plate adjacent to the vertical plate is provided with two positioning holes which are parallel to a positioning shaft axially and which are arranged on two sides of the positioning shaft symmetrically. The vertical plate is provided with an elastic positioning pin assembly matching with the two positioning holes, and the elastic positioning pin assembly matches with one positioning hole for one time. A workpiece is fixedly mounted on the bent plate through a workpiece positioning support assembly. The positioning shaft assembly is capable of positioning and assembling the bent plate, machining the outer circumference on one side of the workpiece and machining the outer circumference on the other side of the workpiece by rotating the bent plate around the positioning shaft assembly by 180 DEG, and two outer circumferences of the workpiece can be machined by positioning and clamping the workpiece once; compared with the prior art, the biaxial member special turning fixture has the advantages that the machining time can be shortened by more than one time, man-made errors caused by twice positioning and clamping are eliminated, and stability of machining accuracy is guaranteed.
Description
Technical field
The utility model relates to a kind of clamp for turning, especially a kind of twin shaft part turning Special Fixture for Machining.
Background technology
Heavy-duty car traction crossbeam assembly comprises two traction beam seats and two Guan Liang.Traction beam seat is " U " type structure, by two Guan Liang, two traction beam seats is connected as one, and is welded and fixed.Traction beam seat is provided with some connection unthreaded holes and the screwed hole that draw hook is used is installed.Traction beam seat assembly is arranged on longitudinal beam front portion, has both played the anterior horizontal beam action of vehicle frame, simultaneously for connecting bumper holder and front haulage hook.
For proof strength requirement, the centre-to-centre spacing of the twin shaft of traction beam seat and pipe beam fit clearance and traction beam seat twin shaft must reach designing requirement, therefore, the welding process of traction beam seat process and Guan Liang is especially crucial, if processing method is improper, cause the size after processing not reach requirement, will make whole traction crossbeam assembly scrap.Traction crossbeam assembly plays the effect of reinforcing and insuring in whole vehicle frame, and therefore, requirement must reach certain intensity, and designing material is No. 45 steel, and welding performance is poor, in order to ensure to reach design strength, must in welding, adopt an effective measure.
In view of this traction crossbeam assembly belongs to apparent size complexity, is difficult for looking for positioning datum type product, for machining industry, clamping difficulty is larger; Traction beam seat twin shaft diameter and centre-to-centre spacing required precision are higher, if adopt conventional method processing to be difficult to ensure machining accuracy, and production efficiency can be very low, make a concrete analysis of as follows: traction beam seat two cylindrical centre-to-centre spacing are 250 ± 0.2, and when assembling, requiring coplanar flat degree is 1, as two cylindricals only adopt plane and two pits location, because locating surface does not need processing, locating surface is thick benchmark, if two cylindricals adopt clamping twice, position error is large, cannot ensure designing requirement.If locating surface is processed into smart benchmark, increase cost, reduce production efficiency simultaneously.Therefore, adopt the processing of conventional fixture, the operation production efficiency of car two cylindricals is low, machining accuracy is unstable, the existing weak point of prior art that Here it is.
Summary of the invention
The technical problems to be solved in the utility model, is exactly for the existing deficiency of prior art, and a kind of machining accuracy and the higher twin shaft part turning Special Fixture for Machining of production efficiency is provided.
This programme is achieved by the following technical measures: this twin shaft part turning Special Fixture for Machining comprises riser and bent plate, described riser is connected by locating shaft assembly with bent plate, one end near riser on bent plate is provided with two locating holes, two locating holes and locating shaft axially parallel, and two locating holes are symmetricly set on the both sides of locating shaft, the elastic positioning pin assembly that can coordinate with two locating holes is installed on described riser, and elastic positioning pin assembly once only coordinates with a locating hole; On the end face of described bent plate, be provided with workpiece positioning supports assembly.
Above-mentioned elastic positioning pin assembly comprises the sleeve I being fixedly connected with riser, in sleeve I, be provided with stepped hole, in stepped hole, be provided with inclined-plane, the location pin being mated, the beveled end of inclined-plane, location pin coordinates with locating hole, and the outer ring of inclined-plane, location pin is wound with spring I.Adopt after this version, both can to bent plate and on workpiece position fixing, can ensure that again bent plate can be around locating shaft assembly Rotate 180 °, inclined-plane, location pin automatic spring in elastic positioning pin assembly positions bent plate, ensure that one-time positioning clamping can complete the processing of both sides cylindrical, clamping is enhanced about more than once with common mode phase specific efficiency process time.
In inclined-plane, above-mentioned location pin, one end relative with beveled end is provided with keyway, on stepped hole, be provided with the positioning key coordinating with keyway, coordinate with keyway by positioning key, inclined-plane, location pin is led, ensure the action stability of inclined-plane, location pin, to ensure positioning precision.
On inclined-plane, above-mentioned location pin, be provided with the shaft shoulder, one end of spring I is fixedly connected with the shaft shoulder, the other end is fixedly connected with the step of stepped hole, and can ensure to locate inclined-plane pin can automatically reset, and can cushion again the action of inclined-plane, location pin.
The end of above-mentioned sleeve I is fixedly connected with end cap.
Above-mentioned locating shaft assembly comprises locating shaft, one end of locating shaft stretches out bent plate and this end is provided with locking nut I, add man-hour, by locking nut I, bent plate is locked, ensure that bent plate is fixedly secured, after the Excircle machining of one end, unclamp locking nut I, bent plate, around locating shaft Rotate 180 °, is processed to opposite side cylindrical.
Above-mentioned workpiece positioning supports assembly comprises alignment pin, support member I, support member II and the elastic hold-down mechanism coordinating with support member II, by support member I and support member II supporting workpiece, by two alignment pins and gib head pressing plate, workpiece is fixed on bent plate, to ensure machining accuracy.
Above-mentioned elastic hold-down mechanism comprises the sleeve II being fixedly connected with bent plate, in sleeve II, stud is installed, the lower end of stud is threaded with sleeve II, upper end has been threaded locking nut II, the outside of stud is set with gib head pressing plate, gib head pressing plate coordinates with support member II, and the lower end of gib head pressing plate is connected with spring II.By locking or unclamping locking nut II, realize depressing or lifting of gib head pressing plate, thereby realize the compression of gib head pressing plate to workpiece or unclamp.
Above-mentioned locking nut I and locking nut II are for band shoulder hex nut, to ensure both lock abilities.
Above-mentioned two locating hole inner sides are provided with lining.
The beneficial effect of this programme can be learnt according to the narration to such scheme, in this twin shaft part turning Special Fixture for Machining, riser is connected by locating shaft assembly with bent plate, one end near riser on bent plate is provided with two locating holes, two locating holes and locating shaft axially parallel, and two locating holes are symmetricly set on the both sides of locating shaft, the elastic positioning pin assembly that can coordinate with two locating holes is installed on described riser, elastic positioning pin assembly once only coordinates with a locating hole.Adopt after this version, workpiece is fixedly mounted on bent plate by workpiece positioning supports assembly.Locating shaft assembly both can position bent plate fixing, carry out the processing of workpiece one side cylindrical, can make again bent plate rotate 180 ° around locating shaft assembly, carry out the processing of workpiece opposite side cylindrical, ensure each rotation, processing excircles is all on the pivot of clamp body.This fixture is realized workpiece one-time positioning clamping, can complete the processing of two cylindricals on workpiece, compared with prior art, can shorten process time more than one times, and has eliminated the human error that twice positioning and clamping causes, and has effectively ensured the stability of machining accuracy.This fixture operation is simple, convenient mounting and clamping, and registration can be produced in batches under the prerequisite of ensuring the quality of products.As can be seen here, the utility model compared with prior art, has substantive distinguishing features and progress, and the beneficial effect of its enforcement is also apparent.
Brief description of the drawings
Fig. 1 is the structural representation of utility model detailed description of the invention.
Fig. 2 is the sectional structure schematic diagram of A-A in Fig. 1.
Fig. 3 be in Fig. 2 B to structural representation.
Fig. 4 is the structural representation of twin shaft part.
In figure: 1-end cap, 2-bent plate, 3-alignment pin, 4-gib head pressing plate, 5-support member II, 6-support member I, 7-twin shaft pedestal, 8-lining, 9-locking nut I, 10-locating shaft, 11-sleeve I, inclined-plane, 12-location pin, 13-keyway, 14-positioning key, 15-spring I, 16-riser, 17-band shoulder hex nut, 18-positioning shaft sleeve, 19-spring II, 20-sleeve II, 21-locking nut II, 22-stud, 23-locating hole, 24-shoulder hole, the 25-shaft shoulder, 26-pipe beam.
Detailed description of the invention
For clearly demonstrating the technical characterstic of this programme, below by detailed description of the invention, and in conjunction with its accompanying drawing, this programme is set forth.
A kind of twin shaft part turning Special Fixture for Machining, as shown in the figure, it comprises riser 16 and bent plate 2, described riser 16 is connected by locating shaft assembly with bent plate 2, one end near riser 16 on bent plate 2 is provided with two locating holes 23, two locating hole 23 inner sides are provided with lining 8, two locating holes 23 and locating shaft 10 axially parallels, and two locating holes 23 are symmetricly set on the both sides of locating shaft 10, the elastic positioning pin assembly that can coordinate with two locating holes 23 is installed on described riser 16, and elastic positioning pin assembly once only coordinates with a locating hole 23; On the end face of described bent plate 2, be provided with workpiece positioning supports assembly.
Wherein, elastic positioning pin assembly comprises the sleeve I 11 being fixedly connected with riser 16, the end of sleeve I 11 is fixedly connected with end cap 1, in sleeve I 11, be provided with shoulder hole 24, in shoulder hole 24, be provided with inclined-plane, the location pin 12 being mated, the beveled end of inclined-plane, location pin 12 coordinates with locating hole 23, and the outer ring of inclined-plane, location pin 12 is wound with spring I 15.In inclined-plane, location pin 12, one end relative with beveled end is provided with keyway 13, is provided with the positioning key 14 coordinating with keyway 13 on shoulder hole 24.On inclined-plane, location pin 12, be provided with the shaft shoulder 25, one end of spring I 15 is fixedly connected with the shaft shoulder 25, the other end is fixedly connected with the step of shoulder hole 24.
Locating shaft assembly comprises locating shaft 10, and bent plate 2 is stretched out in one end of locating shaft 10, and the one end of stretching out bent plate 2 in locating shaft 10 is provided with locking nut I 9, and this locking nut I 9 is band shoulder hex nut.
Workpiece positioning supports assembly comprises alignment pin 3, support member I 6, support member II 5 and the elastic hold-down mechanism coordinating with support member II 5, preferably adopt two along the symmetrically arranged alignment pin 3 of locating shaft 10, one with 6, two of coaxial support member I of locating shaft 10 along the symmetrically arranged support member II 5 of locating shaft 10 and elastic hold-down mechanism.Wherein, elastic hold-down mechanism comprises the sleeve II 20 being fixedly connected with bent plate 2, stud 22 is installed in sleeve II 20, the lower end of stud 22 is threaded with sleeve II 20, upper end has been threaded locking nut II 21, this locking nut II 21 is band shoulder hex nut, the outside of stud 22 is set with gib head pressing plate 4, and gib head pressing plate 4 coordinates with support member II 5, and the lower end of gib head pressing plate 4 is connected with spring II 19.
Add man-hour, twin shaft pedestal 7 is placed in support member I 6 and support member II 5, utilize two alignment pins 3 that twin shaft pedestal 7 is positioned on bent plate 2, utilize gib head pressing plate 4 that twin shaft pedestal 7 is fixed.Inclined-plane, location pin 12 coordinates location with one of them locating hole 23 on bent plate 2, and locking nut I 9 on screwed in place axle 10, lathe tool car one end cylindrical, one end completion of processing, locking nut I 9 is unclamped, bent plate 2 turns clockwise, and makes to locate inclined-plane pin 12 from the interior ejection of this locating hole 23, after bent plate 2 Rotate 180s °, under the effect of spring I 15, inclined-plane, location pin 12 coordinates location with another locating hole 23 automatically, locking locking nut I 9, car other end cylindrical.This version can ensure that bent plate 2 rotates at every turn, and processing excircles is all on the pivot of fixture, by the flatness requirement after centre-to-centre spacing and the assembling of accuracy guarantee two cylindricals of fixture.
The utlity model has following advantage:
1, adopt rotatable bent plate 2, on engine lathe, realize workpiece and only need one-time positioning clamping, complete the processing of two cylindricals, eliminated the human error of twice positioning and clamping, effectively ensured the stability of machining accuracy.While adopting non-rotating, centre-to-centre spacing changes unstable, and maximum reaches 1mm, and after general assembly, coplanar flat degree changes more than 2mm, and product must 100% inspection.Adopt after scheme of the present utility model, centre-to-centre spacing changes in 0.05, and flatness changes below 0.8, can ensure designing requirement.
2, adopt inclined-plane, location pin 12 location automatically, ensured machining accuracy, improved production efficiency simultaneously.
3, clamping is easy, effectively raises production efficiency.When bent plate 2 rotates, only need unclamp locking nut I 9, rotate bent plate, the elastic force that drives inclined-plane, location pin 12 to overcome spring I 15 when bent plate 2 rotates departs from locating hole 23, when after bent plate 2 Rotate 180s °, inclined-plane, location pin 12 automatic springs, complete location, compared with prior art effectively shortened clamping process time, working (machining) efficiency can be enhanced about more than once.
This fixture uses at engine lathe, simple to operate, convenient mounting and clamping, and registration can be produced in batches under the prerequisite of ensuring the quality of products.
In the utility model, can pass through existing techniques in realizing without the technical characterictic of describing, not repeat them here.The foregoing is only preferred embodiment of the present utility model; the utility model is not limited in above-mentioned detailed description of the invention; variation, remodeling, interpolation or replacement that those of ordinary skill in the art make in essential scope of the present utility model, also should belong to protection domain of the present utility model.
Claims (10)
1. a twin shaft part turning Special Fixture for Machining, it is characterized in that: it comprises riser and bent plate, described riser is connected by locating shaft assembly with bent plate, one end near riser on bent plate is provided with two locating holes, two locating holes and locating shaft axially parallel, and two locating holes are symmetricly set on the both sides of locating shaft, the elastic positioning pin assembly that can coordinate with two locating holes is installed on described riser, elastic positioning pin assembly once only coordinates with a locating hole; On the end face of described bent plate, be provided with workpiece positioning supports assembly.
2. twin shaft part turning Special Fixture for Machining according to claim 1, it is characterized in that: described elastic positioning pin assembly comprises the sleeve I being fixedly connected with riser, in sleeve I, be provided with stepped hole, in stepped hole, be provided with inclined-plane, the location pin being mated, the beveled end of inclined-plane, location pin coordinates with locating hole, and the outer ring of inclined-plane, location pin is wound with spring I.
3. twin shaft part turning Special Fixture for Machining according to claim 2, is characterized in that: in inclined-plane, described location pin, one end relative with beveled end is provided with keyway, is provided with the positioning key coordinating with keyway on stepped hole.
4. according to the twin shaft part turning Special Fixture for Machining described in claim 2 or 3, it is characterized in that: on inclined-plane, described location pin, be provided with the shaft shoulder, one end of spring I is fixedly connected with the shaft shoulder, the other end is fixedly connected with the step of stepped hole.
5. twin shaft part turning Special Fixture for Machining according to claim 4, is characterized in that: the end of described sleeve I is fixedly connected with end cap.
6. twin shaft part turning Special Fixture for Machining according to claim 1, is characterized in that: described locating shaft assembly comprises locating shaft, and one end of locating shaft stretches out bent plate and this end is provided with locking nut I.
7. twin shaft part turning Special Fixture for Machining according to claim 6, is characterized in that: described workpiece positioning supports assembly comprises alignment pin, support member I, support member II and the elastic hold-down mechanism coordinating with support member II.
8. twin shaft part turning Special Fixture for Machining according to claim 7, it is characterized in that: described elastic hold-down mechanism comprises the sleeve II being fixedly connected with bent plate, in sleeve II, stud is installed, the lower end of stud is threaded with sleeve II, upper end has been threaded locking nut II, the outside of stud is set with gib head pressing plate, gib head pressing plate coordinates with support member II, and the lower end of gib head pressing plate is connected with spring II.
9. twin shaft part turning Special Fixture for Machining according to claim 8, is characterized in that: described locking nut I and locking nut II are band shoulder hex nut.
10. twin shaft part turning Special Fixture for Machining according to claim 1 and 2, is characterized in that: described two locating hole inner sides are provided with lining.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420088463.3U CN203726184U (en) | 2014-02-28 | 2014-02-28 | Biaxial member special turning fixture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420088463.3U CN203726184U (en) | 2014-02-28 | 2014-02-28 | Biaxial member special turning fixture |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203726184U true CN203726184U (en) | 2014-07-23 |
Family
ID=51196292
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420088463.3U Expired - Fee Related CN203726184U (en) | 2014-02-28 | 2014-02-28 | Biaxial member special turning fixture |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203726184U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109304631A (en) * | 2018-11-15 | 2019-02-05 | 浙江坤博机械制造有限公司 | A kind of full electric injection molding machine special type guiding attachment base tool fixture |
| CN113857502A (en) * | 2021-11-09 | 2021-12-31 | 中国兵器工业集团江山重工研究院有限公司 | Multi-shafting excircle pin turning device for lathe |
-
2014
- 2014-02-28 CN CN201420088463.3U patent/CN203726184U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109304631A (en) * | 2018-11-15 | 2019-02-05 | 浙江坤博机械制造有限公司 | A kind of full electric injection molding machine special type guiding attachment base tool fixture |
| CN109304631B (en) * | 2018-11-15 | 2023-12-19 | 浙江坤博精工科技股份有限公司 | All-electric injection molding machine guide connection seat tool fixture |
| CN113857502A (en) * | 2021-11-09 | 2021-12-31 | 中国兵器工业集团江山重工研究院有限公司 | Multi-shafting excircle pin turning device for lathe |
| CN113857502B (en) * | 2021-11-09 | 2023-08-25 | 中国兵器工业集团江山重工研究院有限公司 | Multi-shafting excircle turning pin device for lathe |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140723 Termination date: 20170228 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |